NO20200920A1 - A method and facility for assembling a plurality of floating wind turbines - Google Patents

A method and facility for assembling a plurality of floating wind turbines Download PDF

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Publication number
NO20200920A1
NO20200920A1 NO20200920A NO20200920A NO20200920A1 NO 20200920 A1 NO20200920 A1 NO 20200920A1 NO 20200920 A NO20200920 A NO 20200920A NO 20200920 A NO20200920 A NO 20200920A NO 20200920 A1 NO20200920 A1 NO 20200920A1
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NO
Norway
Prior art keywords
vessel
installation
crane
tower
facility
Prior art date
Application number
NO20200920A
Other versions
NO346384B1 (en
Inventor
Geir Grimsrud
Original Assignee
Fred Olsen Ocean Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fred Olsen Ocean Ltd filed Critical Fred Olsen Ocean Ltd
Priority to NO20200920A priority Critical patent/NO346384B1/en
Priority to CN202180050866.1A priority patent/CN116034221A/en
Priority to JP2023512430A priority patent/JP2023539179A/en
Priority to US18/041,927 priority patent/US20230332576A1/en
Priority to PCT/EP2021/072880 priority patent/WO2022038165A1/en
Priority to EP21763332.0A priority patent/EP4200528A1/en
Priority to KR1020237009468A priority patent/KR20230054849A/en
Priority to AU2021327133A priority patent/AU2021327133A1/en
Publication of NO20200920A1 publication Critical patent/NO20200920A1/en
Publication of NO346384B1 publication Critical patent/NO346384B1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B75/00—Building or assembling floating offshore structures, e.g. semi-submersible platforms, SPAR platforms or wind turbine platforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/185—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use erecting wind turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • F03D13/25—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors specially adapted for offshore installation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B63B2035/4433—Floating structures carrying electric power plants
    • B63B2035/446—Floating structures carrying electric power plants for converting wind energy into electric energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2209/00—Energy supply or activating means
    • B63B2209/20—Energy supply or activating means wind energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/60—Assembly methods
    • F05B2230/61—Assembly methods using auxiliary equipment for lifting or holding
    • F05B2230/6102—Assembly methods using auxiliary equipment for lifting or holding carried on a floating platform
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Wind Motors (AREA)

Description

A METHOD AND FACILITY FOR ASSEMBLING A PLURALITY OF FLOATING WIND TURBINES
Technical Field
[0001] The present invention relates to a method and an arrangement to assemble wind turbines on floating foundations, as defined in the appended claims.
Background Art
[0002] In prior art wind turbines are either assembled individually at the installation site or assembled at the dock and transported to the installation site. In the latter case, several wind turbines may be transported to the installation site by the same vessel.
[0003] An example of the first type of technology is shown in CN101429928B, where a barge is used to transport the wind turbine and a crane vessel lifts the turbine from the barge and onto a foundation.
[0004] An example of the latter type is shown in WO2019100909A1, where a plurality of already assembled turbines are arranged in a rack on a vessel and transported to the installation sites where they are lifted into the sea.
[0005] Other prior art examples are shown in GB2225365B, CN101565091B, CN106014874B, JP1985208512A, CN110173397A, GB2479232A, JP5189050B2 and CN104192272A.
[0006] The individual assembly on site method is a slow and laborious process that is not suitable for installation of a plurality of wind turbines. The barge has to travel back to the port to pick up the next turbine. In the meantime, the crane vessel will be idle waiting for the barge to return.
[0007] The transporting of a plurality of already assembled turbines to the installation site, or area, is more efficient, but it requires a special purpose vessel that is capable of transporting the assembled wind turbines.
[0008] As the need for renewable energy increases, ocean-based wind turbines have become an increasingly viable source. Building wind turbines one by one is therefore not viable these days. This is too inefficient and expensive. There is therefore a need of a new method and arrangement that is both efficient and does not require purpose-built vessels, but can be performed using standard barges, transport vessels and crane vessels.
Summary of invention
[0009] The main object of the present invention is to provide a method and an arrangement that allows for a continuous serial production of completed floating wind turbines.
[0010] Another object is to reduce costs and build time.
[0011] The above objects are achieved by the distinguishing features of subsequent claim 1 and claim 8.
[0012] With the novel method of the present invention, serial production of wind turbines can take place without substantial waiting time for any of the vessels involved.
Brief description of drawings
[0013] The invention will now be described in connection with an illustrative exemplary embodiment shown in the accompanying drawings, in which:
Figure 1 shows an installation vessel and a barge to be used as a permanent installation during the assembly of wind turbines,
Figure 2 shows a first feeder vessel moored at the installation,
Figure 3 shows wind turbine blades having been loaded from the first feeder vessel to the barge,
Figure 4 shows a second heavy lift feeder vessel having arrived with tower sections,
Figure 5 shows some of the tower section having been lifted from the second feeder vessel onto the installation vessel,
Figure 6 shows a third feeder vessel having arrived with nacelles,
Figure 7 shows nacelles being unloaded,
Figure 8 shows a first foundation having arrived at the installation,
Figure 9 shows a tower being erected on the first foundation,
Figure 10 shows further unloading of tower section,
Figure 11 shows a nacelle having been installed on the first wind turbine,
Figure 12 shows blades being installed on the first wind turbine,
Figure 13 shows the first wind turbine being towed away and a second foundation arriving,
Figure 14 shows a tower having been erected on the second foundation,
Figure 15 shows the second wind turbine having been completed,
Figure 16 shows a tower having been erected on a third foundation,
Figure 17 shows the third wind turbine having been completed,
Figure 18 shows a tower having been erected on a fourth foundation,
Figure 19 shows the fourth wind turbine having been completed,
Figure 20 shows the first feeder vessel coming back to the installation,
Figure 21 shows the third feeder vessel coming back to the installation,
Figure 22 shows the second feeder vessel coming back to the installation, and
Figure 23 shows a fifth wind turbine having been completed.
Detailed description of the invention
[0014] The exemplary embodiment of the invention is illustrated as a sequence in figures 1 – 23. As a first step of the method, an installation vessel 1 and a barge 2 are brought to sheltered area, such as a fjord or a bay with adequate depth.
[0015] The barge 2 is moored using anchors (not shown) and the installation vessel 1 is positioned next to the barge 2, as shown in figure 1. The installation vessel 1 is preferably of the jack-up type, having jack-up legs 3. The jack-up legs 3 are lowered to the sea floor to support the vessel 1 in a fixed position above the water surface.
[0016] The installation vessel is equipped with a crane 4 with sufficient lifting capacity to lift the heavy parts of the wind turbines.
[0017] With the installation vessel 1 and barge 2 in fixed positions, a first feeder vessel 5 arrives with a stack of turbine blades 6. The feeder vessel 5 is brought next to the barge 2 and moored to this at the opposite side of the installation vessel 1, as shown in figure 2. The blades 6 are contained within frames, cages or boxes, making it possible to stack them on the deck of the feeder vessel 5. In the following the frames, cages or boxes will be referred to as cages.
[0018] Then the crane 4 lifts the blades 6 off the feeder vessel 5 and onto the barge 2, as shown in figure 3. The barge may not have sufficient space for all blades. In that case some of the blades will remain on board the feeder vessel until a sufficient number of blades to free up space have been assembled to a wind turbine. As soon as all blades have been loaded off the first feeder vessel, the feeder vessel 5 is free to return to the port and pick up new items.
[0019] Next a second heavy lift feeder vessel 7 arrives with tower sections 8. The heavy lift feeder vessel is brought next to the installation vessel 1 and moored to this at the opposite side of the barge 2, as shown in figure 4.
[0020] Then the tower sections 8 are lifted off the heavy lift feeder vessel 7 and onto the deck of the installation vessel 1, as shown in figure 5. The tower sections 8 can be of different lengths, according to their position in the assembled tower. As the installation vessel 1 may not have enough space to accommodate all tower parts 8, some parts 8 may remain on the second heavy duty feeder vessel 7. During the transfer of the tower sections 8, a couple of towers 8a (this can be from one to all towers 8a depending on the space available) are erected in assembled state on the deck of the installation vessel.
[0021] In the next step a third feeder vessel 9 arrives with a load of nacelles 10. This can be done while the second heavy lift feeder vessel 7 is still docked next to the installation vessel 1. As can be seen from figure 6, the barge 2 is arranged somewhat displaced along the installation vessel 1, leaving a portion of the side of the installation vessel 1 clear for the third feeder vessel 9 to dock and moor next to the installation vessel 1.
[0022] As shown in figure 7, the nacelles 10 now lifted off the third feeder vessel 9 and onto the deck of the installation vessel 1. As for the first and second feeder vessels, there may not be sufficient room for all nacelles on the installation vessel 1 (or the barge 2). In that case some of the nacelles will remain on board the feeder vessel until sufficient space has been freed up on the installation vessel. The third feeder vessel is then free to leave to pick up further items.
[0023] With all parts of the wind turbine now arranged either on the installation vessel 1, the barge 2 and possibly the second feeder vessel 7, a first floating foundation 11a is brought next to the installation vessel 1. This is preferably done by two tugboats (not shown). Winches (not shown) on board the installation vessel 1 are used to pull the foundation 11 close to the installation vessel 1 and keep it in position.
[0024] Now the assembly of the wind turbines is ready to commence. One of the already assembled towers 8a is lifted by the crane 4 and onto the foundation 11a where it is secured, as shown in figure 9.
[0025] As the space where the first tower 8a was arranged on the installation vessel 1 is freed, a further tower section 8 can be lifted from the second feeder vessel 7 to the free space on the installation vessel 1, as shown in figure 10.
[0026] Now a nacelle 10 is installed on top of the tower 8a, as shown in figure 11. The crane 4 may continue to assemble tower sections into 8 a new tower 8b, as long as it is not engaged in the assembly operation of the wind turbine on the foundation 11a, as also shown in figure 11.
[0027] In the next step a blade gripper (not shown) is attached to the hook of the crane 4. Then a first blade 6 is lifted out of its cage directly from the barge 2 and attached to the nacelle 10. The same procedure is repeated for the next two blades 6.
[0028] When the crane is idle, it may be used to lift the empty cages in which the blades 6 were stored onto a free space on the deck of the installation vessel 1.
[0029] After testing the function of the wind turbine, i.e. rotating the nacelle, the first foundation 11a with the assembled turbine 12a can be towed away and to the installation site or to a temporary storage area, awaiting installation.
[0030] A new foundation 11b can now be towed into the position where the first foundation 11a used to be, as shown in figure 13.
[0031] In figure 14 the second tower 8b has been lifted from the installation vessel 1 onto and fixed to the second foundation 11b. During idle periods after the tower 8b has been removed from the installation vessel 1, the remaining tower parts 8 are lifted from the second feeder vessel 7 and assembled to a third tower 8c on the installation vessel 1. When the last tower section 8 has been removed from the feeder vessel 7, the feeder vessel 7 is free to leave and return to port to pick up new items, see figure 15.
[0032] The second turbine 12b is now completely assembled according to the same procedure as for the first turbine 12a, and after testing the turbine 12b will be towed to the installation site or to an intermediate storage area.
[0033] A third foundation 11c is towed to a position next to the installation vessel 7 and the third tower 8c is fixed thereon, as shown in figure 16. Then a nacelle 10 and blades 6 are installed in the same way as explained above until the third turbine 12c is complete, as shown in figure 17.
[0034] During idle periods, the crane 4 is used to assemble yet another tower 8d from tower sections 8 that have already been placed on the deck of the installation vessel 7.
[0035] Figure 18 shows a fourth foundation 11d with the fourth tower 8d affixed thereon.
[0036] Figure 19 shows the fourth turbine 12d completed. In idle periods the crane 4 has built up the fifth tower 8e from the remaining tower sections 8 (see figure 18).
[0037] The barge 2 is now empty and the first feeder vessel 5 returns with new blades 6, as shown in figure 20. These are lifted onto the barge 2, while the empty blade cages are lifted from the installation vessel 1 to the first feeder vessel 5. The first feeder vessel then leaves. The fourth turbine 12d is now completed and will after testing be towed to the installation site or to an intermediate storage location.
[0038] As shown in figure 21, the third feeder vessel 9 returns with new nacelles 10. These are lifted onto the installation vessel 1, as shown in figure 22. After this the third feeder vessel leaves.
[0039] A fifth foundation 11e is towed to and moored to the installation vessel 1 and the fifth tower 8e is lifted onto and affixed to the fifth foundation 11e. In the meantime, the second heavy lift feeder vessel 7 returns with new tower sections 8. Some of these are lifted onto the installation vessel 1 when the crane 4 is not busy assembling the fifth turbine 12e.
[0040] When the fifth turbine 12e has been tested and found to be in working order, it is towed away, and the process continues with additional foundations being towed to the position next to the installation vessel one by one. The assembly and installation of additional wind turbines proceeds in the same way as described above until the required number of complete wind turbines has been produced.
[0041] In the method described above, a crane vessel has been used, which does not have enough deck space for all tower section, so that some tower sections have to remain on board the second feeder vessel. With a somewhat larger crane vessel, it is of course possible to unload all of the tower sections from the feeder vessel and thereby free up the feeder vessel at an earlier time.
[0042] An important result of the present invention is that the installation facility does not have to wait for new parts to arrive but can continuously assemble wind turbines. The feeder vessels should therefore be freed of their load sufficiently early to be able to take another turn to the port and return with a new supply of parts in time for their need.
[0043] In the above example three feeder vessels are used. If the travel time between the port and the installation facility is short, two feeder vessels may be sufficient.

Claims (8)

Claims
1. A method for assembling a plurality of floating wind turbines, comprising the following steps:
a. establishing an installation facility by arranging an installation vessel, having a crane, at a secluded place, as well as mooring a barge next to said installation vessel,
b. transporting a plurality of turbine blades to said installation facility,
c. lifting said turbine blades, using said crane, onto said installation facility,
d. transporting a plurality of tower sections to said installation facility,
e. lifting at least some of said plurality of tower sections, using said crane, onto said installation facility,
f. transporting a plurality of nacelles to said installation facility,
g. lifting said nacelles, using said crane, onto said installation facility,
h. towing a first floating wind turbine foundation to said installation facility,
i. erecting a tower on said first foundation by assembling a set of said tower sections, using said crane,
j. installing a nacelle on top of said tower, using said crane,
k. installing a set of turbine blades onto said nacelle, using said crane, to make a completed wind turbine,
l. towing said first wind turbine away, making space of a second floating foundation at the spot where the first wind turbine was assembled.
2. The method of claim 1, wherein said installation vessel is a jack-up vessel and the arranging of said vessel includes lifting said vessel from the sea surface using the jack-up legs.
3. The method of claim 1 or 2, wherein said turbine blades are transported in cages and are lifted onto said barge.
4. The method of any of the preceding claims, wherein at least some of said tower sections are lifted onto the deck of said installation vessel.
5. The method of claim 4, wherein some of said tower sections remain onboard a feeder vessel transporting them to the installation facility.
6. The method of any of the preceding claims, wherein said nacelles are lifted onto said installation vessel.
7. The method of any of the preceding claims, wherein the crane is used to erect a tower on said installation vessel when it is not busy assembling a wind turbine on said foundation.
8. A wind turbine installation facility comprising an installation vessel having a crane and a barge, said installation vessel being a jack-up vessel and being arranged at a secluded place by lifting said vessel from the sea surface using its jack-up legs, and said barge being moored to said installation vessel, wherein said installation facility has deck space to receive parts sufficient to assemble a plurality of wind turbines, and features enabling mooring of a floating foundation next to said installation vessel on which the wind turbine can be assembled.
NO20200920A 2020-08-20 2020-08-20 A method and facility for assembling a plurality of floating wind turbines NO346384B1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NO20200920A NO346384B1 (en) 2020-08-20 2020-08-20 A method and facility for assembling a plurality of floating wind turbines
CN202180050866.1A CN116034221A (en) 2020-08-20 2021-08-18 Method and apparatus for assembling a plurality of floating wind turbines
JP2023512430A JP2023539179A (en) 2020-08-20 2021-08-18 Assembly method and equipment for multiple floating wind turbines
US18/041,927 US20230332576A1 (en) 2020-08-20 2021-08-18 A method and facility for assembling a plurality of floating wind turbines
PCT/EP2021/072880 WO2022038165A1 (en) 2020-08-20 2021-08-18 A method and facility for assembling a plurality of floating wind turbines
EP21763332.0A EP4200528A1 (en) 2020-08-20 2021-08-18 A method and facility for assembling a plurality of floating wind turbines
KR1020237009468A KR20230054849A (en) 2020-08-20 2021-08-18 Method and equipment for assembling multiple floating wind turbines
AU2021327133A AU2021327133A1 (en) 2020-08-20 2021-08-18 A method and facility for assembling a plurality of floating wind turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO20200920A NO346384B1 (en) 2020-08-20 2020-08-20 A method and facility for assembling a plurality of floating wind turbines

Publications (2)

Publication Number Publication Date
NO20200920A1 true NO20200920A1 (en) 2022-02-21
NO346384B1 NO346384B1 (en) 2022-07-04

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NO20200920A NO346384B1 (en) 2020-08-20 2020-08-20 A method and facility for assembling a plurality of floating wind turbines

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US (1) US20230332576A1 (en)
EP (1) EP4200528A1 (en)
JP (1) JP2023539179A (en)
KR (1) KR20230054849A (en)
CN (1) CN116034221A (en)
AU (1) AU2021327133A1 (en)
NO (1) NO346384B1 (en)
WO (1) WO2022038165A1 (en)

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NO346981B1 (en) * 2022-04-08 2023-03-27 Frigstad Eng Norway As A device and a method for facilitating assembling of a wind turbine
WO2024003576A1 (en) * 2022-07-01 2024-01-04 Planet 42 Limited Improvements in and relating to assembling a structure

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